Building block



March 6, 1928.

J. T. SENTROP BUILDING BLOCK Filed June 10. 1926 nvrmmx.

(Inna: TSerJZ ZZ 7/11:: M ATTORNEY Patented Mar. 6, 1928,-

PATEN'I" JOHANNES T. SENTROP, OF GRAND RAPIDS, MICHIGAN.

BUILDING BLOCK.

Application filed June 10, 1326. Serial No. 115,025.

The present invention relates to building blocks; and its object is to provide such blocks having improved means for securing them together when laid in position.

This object is attained by, and the invention finds preferable embodiment in, the building blocks hereinafter particularly described in the body of this specification and illustrated by the accompanying drawings, in which Figure 1 is a view in perspective of a building block;

Figure 2 is a top plan view thereof;

Figure 3 is an end view of the same;

Figure 4L is a vertical transverse sectional view of the same taken on line 47*4 of Figure 2; c

Figure 5 is a vertical longitudinal sectional view of adjacent end portions of two of said blocks, taken on a plane corresponding to line 5-5 of Figure 2;

Figure 6 is a vertical transverse sectional view of several courses of said blocks taken on a plane corresponding to line 66 of Figure 2; v 1

Figure 7 is a vertical transverse sectional view of portions of said blocks, enlarged, taken on the same plane;

Figure 8 is a View in perspective of two courses of said blocks having vertical grooves in their sides receiving reinforcing rods;

Figure 9 is a horizontal transverse sectional view of a portion of one of the blocks seen in Figure 8, taken on line 9-9 of said View;

Figure 10 is a top plan view of a portion of said block;

Figure 11 is a side view of said portion; and

Figure 12 is a vertical transverse sectional view of a slightly modified form of the blocks laid on their sides in courses.

In the accompanying drawings approximately rectangular building blocks made of molded concrete or the like are shown, said blocks being preferably hollow, having spaces 1 extending upwardly from their bottoms, two of such spaces as shown being formed in each block and separated by a vertical transverse wall 2. The ends of these blocks are concave, having vertical corners 3, the middle portions 4 of said ends being inc-lined downwardly and outwardly,'as particularly well seen in Figure 5, so that the ends of the blocks are more deeply concave at the top than at the bottom. By this construction mortar or cement may be more readily applied between the ends of adjacent blocks when laid in a wall.

These blocks have at their opposite sides longitudinallyextending shoulders 5 spaced below their upper surfaces 6, and longitudinally-extending grooves 7 spaced inwardly from said shoulders. On these shoulders rest the under surfaces of longitudinally-e2 tending side flanges 8 on the bottoms of blocks next above. The blocks are desirably provided with vertically-extending grooves, 9 adjacent their ends and 10 in their sides intermediate said ends, the groove 10 of blocks in one of the courses registering with the groove 9 of blocks in the next course. w

Reinforcing metal rods 11 are laid in the horizontal grooves 7 and like rods 12 are laid in the vertical grooves 9 and 10, mortar or cement being filled in the grooves and around the rods in laying the wall. It will be seen that a wall of great strength is pro vided by laying these blocks in the manner described.

In Figure 12, the block has a flange 8 extending laterally from one side thereof and seated on a corresponding shoulder 5 in the side of the adjacent block. Such blocks may be laid on their sides in courses as seen in this view, and lath 12 may be ap plied to close the open ends of their spaces 1, plastering 13 being applied to the lath.

The invention being intended to be pointed out in the claims, is not to be limitedto or by details of construction of any particular embodiment thereof illustrated by the drawings or hereinbefore described.

I claim:

1. An approximately rectangular build ing blOCK having at its side a longitudinally-extending shoulder spaced below its upper surface and a longitudinally-extending groove spaced inwardly from said shoulder and adapted to receive a reinforcing rod, the block also having at its bottom a longitudinally-extending side flange adapted to seat on snrh a shoulder of a block beneath.

2. An approximately rectangular building block having in its side adjacent its ends and in its side intermediate its ends verticallyextending grooves adapted to receive rein forcing rods, the grooves adjacent the blocks ends being open to said ends.

In testimony whereof I have hereunto set my hand at Grand Rapids, lllichigan, this 29th day of May, 1926.

JOHANNES T. SENTROP. 

